Improvement in self-acting spinning-jacks



I. E. KNIGHT.

Self-Acting Spinning Jacks. NO. 137,777, -PatentedA1)riH5,1873.

PATENT JOSEPH E. KNIGHT, OF HYDE PARK, MASSACHUSETTS.

IMPROVEMENT IN SELF-ACTING SPINNING'JADKS.

Specification forming part of Letters Patent No. 137,777, dated April 15, 1873; application filed March 6, 1873.

To all whom it may concern:

Be it known that I, JOSEPH E. KNIGHT, of Hyde Park, of th e county of Norfolk and State of Massachusetts, have invented a new and useful Improvement in the Oarriage-Latching Mechanism of an Automatic Spinning-Jack; and I do hereby declare the same to be fully described in the following specification, and represented in the accompanying drawing, of which- Figure 1 is a top view, and Fig. 2 a side elevation, of my improved mechanism. Fig. 3 is a longitudinal section of the extension arm.

The nature of my invention consists in an extension arm, or one formed in two parts, provided with a projection or stud, and connected by a clamp-screw, the whole being to admit of the arm being lengthened or shortened in the manner and for the purpose hereinafter explained, and combined with the felly or carriage arm provided with a lever-catch to operate with the said stud, all being arranged and constructed as specified.

The invention in question may be said to be an improvement in certain mechanism, shown and described in Letters Patent No.

94,278, dated August 31, 1869, to William H.

Brothers; reissued January 2, 1872. The arm, which I term the extension arm, corresponds with that which forms one arm of the bellcrank located at the outer end of the frame of the Brothers mechanism; and the felly-arm corresponds with the one on the carriage, which operates said extension arm, so that the driving-belt will be shifted from the fast to the loose pulley and the backing-off cones brought into operation at the termination of the outward run of the carriage.

In the drawing, the extension arm is shown at A as composed of the two parts a 1), formed as shown. The portion b laps on the part a, and is slotted lengthwise at c to receive a clamp-screw, d, which goes down through the slot, and screws into the lower part a. A stud, 0, projects from the part b, in manner as exhibited, and the said part b is bent or formed angular, as represented. The carriagearm B is furcated at its front end to receive the roller 7, which is to roll upon the upper surface of the part b. Against one end of the roller, and on its pivot g as a fulcrum, is ar-' ranged a lever-catch, h, on 'whose front arm the free end of a spring, 5, bears, such spring at its rear end being fixed to the arm B. The shorter or rear arm of the lever-catch is provided with an adjustable stop, 70, which screws down" through the said rear arm, and, by bringing up against the carriage-arm, determines the extent of downward motion of the hook of the lever-catch.

The purpose of having the arm A made and provided with the stud, as described, and of having the carriagearm B furnished with the lever-catch arranged with it, as set forth, is to save the necessity of substitutin g for the corresponding arm, iinger, and catch of Brothers machines other like arms and catches of different lengths or sizes, when it may be desir able to make the yarn with more or less twist, it having heretofore been customary to make such a substitution, the same requiring often from fifteen to thirty lninutcsfor its accomplishment, and the jack, as a consequence, to be out of operation such time. With my extension arm, the change can be effected in about a minute or less, it being necessary only to slide the part I; either forward or backward on the part a the extent required and clamp the two by the set-screw. By having the stud projecting from the movable part b, and the lever-catch applied directly to the carriagearm, as shown, the stud becomes adjusted with the part b to operate with the catch to hold the jack-carriage, as may be necessary.

The operation of the catch with the stud will be readily understood by spinners or those acquainted with the construction of the jack.

1 claim- In a jack the extension arm A, composed of the two parts a I) provided with the stud c, and constructed, arranged, and connected as described, in combination with the carriagearm B provided with the levercatch it, ar ranged upon it as set forth, all being disposed andito operate together, substantially as specifiei Witnesses: J. E. KNIGHT.

B. H. EDDY, J. R. Snow. 

